| 摘要 |
Disclosed are a table tennis ball that can faithfully reproduce the playing characteristics of celluloid table tennis balls without using celluloid, and a thermoplastic resin composition for table tennis balls that can provide a table tennis ball having an excellent balance of elastic modulus, impact resistance, and density. The table tennis ball is composed of a celluloid-free thermoplastic resin or thermoplastic resin composition having a flexural modulus according to ISO 178 of 1650 MPa or more, a Charpy impact strength according to ISO 179 of 20 kJ/m 2 or more, and a density according to ISO 1183 of less than 1.20 g/cm 3 , has a diameter of 39.0 mm or more, and weighs 2.0 to 3.5 g. |
